ELECTRON BEAM CONTROLLER NASA Case No. LEW-11617-1 Address inquiries to: Corresponding to U.S. Patent No. 3,764,850 Filed 6-27-72 Issued 10-9-73 A magnet applies a magnetic field of predetermined intensity and shape to a spent electron beam over an axial distance having a predetermined relationship to the frequency of operation of a utilization device which has extracted energy from the electron beam and at a predetermined axial distance after the beam has left the magnetic field of the utilization device and entered the beam expansion region and beam stabilization region. The stabilizing magnetic field is terminated abruptly before the electron beam enters a collector apparatus. The lift-induced wingtip vortex associated with large jet aircraft has become a major problem to the air traffic controller as well as an unseen hazard to smaller aircraft. In this invention, a means for attenuating this potentially dangerous wingtip vortex is disclosed which consists of a drogue device attached downstream of the wingtip which creates a positive pressure gradient just downstream from the wing. The positive pressure forces a break up of the rotational air flow of the vortex. VOLTAGE CONTROLLED VARIABLE POWER DIVIDER NASA Case No. GSC-11659 No Corresponding U.S. Patent Address inquiries to: In the voltage controlled variable power divider of the invention, the total output power equals the input power and both outputs have constant and equal phase. The applied power is split into two channels, each of which contains a variable phase shifter. The channels are combined in a 90-degree hybrid coupler so that the relative amplitude in the hybrid outputs is a function of the phase of the hybrid input signals. The phase shifters are voltage driven in opposition so that constant phase is achieved for all output power division ratios. CONNECTOR NASA Case No. LAR-11709 Address inquiries to: Corresponding to U.S. Patent No. 3,964,813 Filed 2-10-75 Issued 6-22-76 A connector for connecting circuits located on different layers of a multilayer printed circuit board through a hole in the board. The connector is a hollow cylindrical conductor made from a conductive, metallic, springy material. A slit in the conductor and a plurality of sharp teeth located on the outside of the conductor extend the full length of the conductor. The conductor has a slightly larger outside diameter than the diameter of the hole. Consequently, when the connector is forced into the hole the springback (resiliency) of the connector forces the teeth against the circuits on the printed circuit. board thereby providing a positive connection between the circuits. TWISTED MULTIFILAMENT SUPERCONDUCTOR NASA Case No. LEW-11726-1 Address inquiries to: 21000 Brookpark Road Corresponding to U.S. Patent No. 3,737,824 Filed 8-11-72 Issued 6-05-73 Masking selected portions of a ribbon and forming an inter-metallic compounds on the unmasked portions by a controlled diffusion reaction produces a twisted filamentary structure. The masking material prohibits the formation of superconductive material on predetermined areas of the substrate. |